Build with dynamic library (in CmakeLists.txt)

Hello, I'm trying to pack and distribute odbc-connector to Fedora repos.

But there is a issue with static lib, since there can't be any in Fedora (if posssible).
But hey, i have a workaround! Just make it optional to build it with dynamic library instead.

Edit file CMakeLists.txt on line 211 and add following:

IF(MARIADB_DYNAMIC_LIB)

  SET(MARIADB_LIB ${MARIADB_DYNAMIC_LIB})

ENDIF()

Now I can build it safely with

cmake ./ -DMARIADB_DYNAMIC_LIB="/usr/lib64mariadb/libmariadb.so"

and you will not lose any functionality.